我想弄清楚javascript文件的执行顺序。下面我有一个例子。告诉我哪条路是正确的。
//JS gets read from top to bottom:
var hello = 6; //JS sees a varaible declared, it stores variable hello in memory
hello = 4; //Then, JS sees a change to var hello, change the value of hello in the same spot of the memory
console.log(hello); //Lastly, JS
假设我的Rails应用程序中有以下模型/关系:
class Book < ActiveRecord::Base
has_many :reviews
end
class Review < ActiveRecord::Base
belongs_to :book
end
我希望评论既是一个独立的资源,也是一个嵌套的图书资源:
resources :books do
resources :reviews
end
resources :reviews
例如,我希望"/reviews“显示最新的评论(针对所有书籍),而"/ book / 1 / reviews”